A. Natural Selection. This is because the weeds that are not resistant to it die out before they can reproduce, but the resistant ones grow to maturity and then reproduce, passing down the resistance gene. Over time, the resistance gene would become a normal thing in weeds, while the non-resistant gene would not exist anyone, since the gene could not be passed on.
The enzyme amylase is the enzyme that matches up to the active site in starch to allow for its break down process. A different enzyme is needed to break down cellulose because amylase would not fit the same way into the cellulose active site in the way that the correct active site would.
Answer: The correct answer is the last option.
Explanation:
Carrier identification test is a screening test that tells if a person is carrier of a particular autosomal recessive disease. It helps in determining the possibility of passing that disease to a child.
Genetic counsellor is professional who is expert in human genetics, research, lab work, counselling, et cetera. After the test, it is best to contact a genetic counsellor as he can explain the family pedigree of the disease. He can best explain the probability of passing a genetic disease to the child.
Answer:
Motor neurons stimulate muscles to contract answer:C